202102212110121 has 24 divisors (see below), whose sum is σ = 294764702109696. Its totient is φ = 133426440873600.

The previous prime is 202102212110119. The next prime is 202102212110137. The reversal of 202102212110121 is 121011212201202.

202102212110121 is a `hidden beast` number, since 2 + 0 + 210 + 221 + 2 + 110 + 121 = 666.

It is not a de Polignac number, because 202102212110121 - 2¹ = 202102212110119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 202102212110094 and 202102212110103.

It is not an unprimeable number, because it can be changed into a prime (202102212117121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 85156065 + ... + 87497198.

It is an arithmetic number, because the mean of its divisors is an integer number (12281862587904).

Almost surely, 2^{202102212110121} is an apocalyptic number.

It is an amenable number.

202102212110121 is a deficient number, since it is larger than the sum of its proper divisors (92662489999575).

202102212110121 is a wasteful number, since it uses less digits than its factorization.

202102212110121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172654533 (or 172654530 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 18.

Adding to 202102212110121 its reverse (121011212201202), we get a palindrome (323113424311323).

The spelling of 202102212110121 in words is "two hundred two trillion, one hundred two billion, two hundred twelve million, one hundred ten thousand, one hundred twenty-one".